/* * CDDL HEADER START * * The contents of this file are subject to the terms of the * Common Development and Distribution License (the "License"). * You may not use this file except in compliance with the License. * * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE * or http://www.opensolaris.org/os/licensing. * See the License for the specific language governing permissions * and limitations under the License. * * When distributing Covered Code, include this CDDL HEADER in each * file and include the License file at usr/src/OPENSOLARIS.LICENSE. * If applicable, add the following below this CDDL HEADER, with the * fields enclosed by brackets "[]" replaced with your own identifying * information: Portions Copyright [yyyy] [name of copyright owner] * * CDDL HEADER END */ /* * Copyright 2015 Nexenta Systems, Inc. All rights reserved. * * Copyright 2010 Sun Microsystems, Inc. All rights reserved. * Use is subject to license terms. */ /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */ /* All Rights Reserved */ #ifndef _SYS_UCONTEXT_H #define _SYS_UCONTEXT_H #include <sys/feature_tests.h> #include <sys/types.h> #include <sys/mcontext.h> #if !defined(_XPG4_2) || defined(__EXTENSIONS__) #include <sys/signal.h> #endif #ifdef __cplusplus extern "C" { #endif /* * Inclusion of <sys/signal.h> for sigset_t and stack_t definitions * breaks XPG4v2 namespace. Therefore we must duplicate the defines * for these types here when _XPG4_2 is defined. */ #if defined(_XPG4_2) && !defined(__EXTENSIONS__) #ifndef _SIGSET_T #define _SIGSET_T typedef struct { /* signal set type */ unsigned long __sigbits[4]; } sigset_t; #endif /* _SIGSET_T */ #ifndef _STACK_T #define _STACK_T typedef struct { void *ss_sp; size_t ss_size; int ss_flags; } stack_t; #endif /* _STACK_T */ #endif /* defined(_XPG4_2) && !defined(__EXTENSIONS__) */ #if !defined(_XPG4_2) || defined(__EXTENSIONS__) typedef struct ucontext ucontext_t; #else typedef struct __ucontext ucontext_t; #endif /* !defined(_XPG4_2) || defined(__EXTENSIONS__) */ #if !defined(_XPG4_2) || defined(__EXTENSIONS__) struct ucontext { #else struct __ucontext { #endif unsigned long uc_flags; ucontext_t *uc_link; sigset_t uc_sigmask; stack_t uc_stack; mcontext_t uc_mcontext; long uc_filler[5]; /* see ABI spec for Intel386 */ }; #if defined(_SYSCALL32) /* Kernel view of user ILP32 ucontext structure */ typedef struct ucontext32 { uint32_t uc_flags; caddr32_t uc_link; sigset_t uc_sigmask; stack32_t uc_stack; mcontext32_t uc_mcontext; int32_t uc_filler[5]; } ucontext32_t; #if defined(_KERNEL) extern void ucontext_nto32(const ucontext_t *src, ucontext32_t *dest); extern void ucontext_32ton(const ucontext32_t *src, ucontext_t *dest); #endif #endif /* _SYSCALL32 */ #if !defined(_XPG4_2) || defined(__EXTENSIONS__) #define GETCONTEXT 0 #define SETCONTEXT 1 #define GETUSTACK 2 #define SETUSTACK 3 /* * values for uc_flags * these are implementation dependent flags, that should be hidden * from the user interface, defining which elements of ucontext * are valid, and should be restored on call to setcontext */ #define UC_SIGMASK 0x01 #define UC_STACK 0x02 #define UC_CPU 0x04 #define UC_MAU 0x08 #define UC_FPU UC_MAU #define UC_MCONTEXT (UC_CPU|UC_FPU) /* * UC_ALL specifies the default context */ #define UC_ALL (UC_SIGMASK|UC_STACK|UC_MCONTEXT) #endif /* !defined(_XPG4_2) || defined(__EXTENSIONS__) */ #ifdef _KERNEL void savecontext(ucontext_t *, const k_sigset_t *); void restorecontext(ucontext_t *); #ifdef _SYSCALL32 extern void savecontext32(ucontext32_t *, const k_sigset_t *); #endif #endif #ifdef __cplusplus } #endif #endif /* _SYS_UCONTEXT_H */